Pipe wrench



May `6 1924. 1,493,241

, E. H. BOOTH PIPE WRENCH Filed Feb. 13. 1923 Patented May 6, 1924.

UNITE4V vsirva EBENEZER H. BOOTH, 0F BIMGHAMTON, NEW YORK.

PIPE WRENCH.

Application led February 13, 1923. Serial No. 618,816.

T 0 all whom t may concern,-

Be it known that I, EBENE-2ER H. BOOTH, a citizen of the United States, resident of Binghamton, in the county of Broome and State of New York, have made a certain new and useful Invention in Pipe Vrenches; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the invention, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 is a side view of the wrench with parts in work gripping position.

Figure 2 is a similar View with work released.

Figure 3 is a section on line 3 3, Figure 1.

Figure 4 is a fragmentary perspective view of the wrench. Y

The invention has relation to pipe wrenches, having yfor an object to provide an improved wrench of simple and durable nature, capable of quick adjustment, and of uick release without the use of springs. ther objects and advantages will appear.

The invention consists in the novel construction and combinations of parts, as hereinafter set forth. v

In the accompanying drawings illustrating the invention, the numeral 1 designates the stationary jaw, having a shank or handle bar 2, forged in a single piece and provided near its head end with a recess 3 in its upper face, and made .somewhat broader and thicker adjacent said recess.

Fitting within the recess 3 is the shank 4 of the fulcrum block 5, a transverse fulcrum pin 6, connecting said shank with the side walls or cheeks of the recess 3. The fulcrum piece is slotted longitudinally at 7 to receive the shank 8 of the movable jaw 9, and slotted transversely at 10 to receive the nut 11, within which is threaded the shank 8 of the movable jaw.

In Figure 1 of the drawings, the wrench is shown engaged with the work 12, the fulcrum block being rocked upon its pin 6 forwardly, the tapered shank 4 of said block contacting at its top or upper part forwardly at 13 with the forward wall of the recess Y3 and at its lower part rearwardly at 14 with the rearwall of said recess, the said contact points |being substantially diametrically opposite the pin 6 to thereby iX the shank 4 of the fulcrum block rigidly in its recess 3 irrespective of the pin 6, to thereby relieve said pin of strain. There is a further margin of movement of the movable jaw as it engages with the work, owing kto ,forward rocking of the nut 11 within the transverse slot 10 of the fulcrum block.

The release of the wrench from the work is accomplished by finger pressure upon the tail end 15 of the shank of the movable jaw, thereby rocking the fulcrum block rearwardly upon the pin 6, as shown in Figure 2, the end 15 o-f said shank being adapted to lie within reach of the thumb of the operator and for engagement by said thumb.

The rocking of the fulcrum block forwardly as stated in the engagement of the wrench with the work is automatic in the self adjustment of the movable jaw to the work.

The wrench is designed to do away with the use of a spring or springs to release it from the work and to avoid the .use of an outer yoke upon the main shank or handle bar. The fulcrum lblock 5 is laterally extended at 16 at each side of its tapered shank 4, thereby overlying the broader p0rtion 17 of the shank or bar 2 of the stationary jaw, the recess 3 being beveled laterally at its top at 18, and the head of the fulcrum block being beveled at its lower lateral po-rtions at 19 to fit within the beveled portions 18, said beveled parts being adapted to contact at 2O in` the forward rocking of the fulcrum block as in Figure 1, to' further take the strain.

I claim In a pipe wrench, a stationary jaw having a recess, a recessed rockable fulcrum block having a shank fitting within said recess, a nut located within the fulcrum block, a movable jaw having a shank having threaded engagement with said nut, and

a fulcrum pin located centrally of said Shank engagement of the Wrench With the Work and pvotally connecting the Same With the to thereby relieve the pin of strain. 10 side Walls Of said reeess centrally of the .ln testimony whereof I ax my' signaturel latter, said fulorum block being rookable in presence of two Witnesses.

5 upon said pin and the shank .of Said block EBENEZER H. BOOTH.

making Contact 'With tle end. Walls of. said Witnesses: recess at points diametrcally Opposite said JESSE C. BOOTH,

pin in the movement of said block n the LELIA BOOTH. 

